ADSL EQUIPMENT AND THEIR DETAILS

ADSL Equipment

• Two groups of equipment

•  Central Office - DSL Access Multiplexer (DSLAM), Repeaters

• Customer Premise - DSL Modems, Gateways, Network Interface Card (NIC), splitters and filter

DSLAM

• DSLAM is usually found in a Central Office

• xDSL line cards are installed in a DSLAM to terminate incoming xDSL signals

• The DSLAM then combines multiple xDSL access lines into one high speed line

• The muxed traffic is converted into ATM cells which gets sent over an ATM backbone

 

 Generic DSL Line Card for DSLAM Applications

 

 DSL Modem/Gateway

• A xDSL modem is the device found at the customer’s premise which is used to transmit & receive xDSL signals

•  Could be an external “box” or a network interface card placed inside a computer

•  An xDSL Gateway combines the functionality of a modem and router 

 DSL Modem Residential Gateway